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An artificial interphase enables stable PVDF-based solid-state Li metal batteries

Nano Research 2024年第3期17卷 1482-1490页

作者： Mengjun Wu Jiangping Song Jiaheng Lei Haolin Tang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Chemistry School of ChemistryChemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528200China

Composite polymer electrolytes(CPEs)have attracted much attention for high energy density solid-state lithium-metal batteries owing to their flexibility,low cost,and easy ***,the unstable Li/CPE interface is always challengeable for the practical utilization of ***,a polymer interlayer containing K+prepared by ultraviolet(UV)-curing precursor solution is coated on Li surface to stabilize the interface between poly(vinylidene difluoride)(PVDF)composite electrolytes and Li *** from the physical barrier of the interlayer,the continuous decomposition of PVDF is restrained and the intimate contact between electrode and electrolyte is also achieved to reduce the interface ***,the added K+is utilized to further regulate smooth Li *** a consequence,the symmetric Li|Li cell with coated Li demonstrates steady cycling at 0.4 mAh·cm^(-2) and a high critical current density of 1 mA·cm^(-2).The assembled Li|LiFePO_(4) cell presents outstanding cycling stability(capacity retention of 90%after 400 cycles at 1 C)and good rate *** associated pouch cell performs impressive flexibility and *** work provides a convenient strategy to achieve stable Li/PVDF interface for high-performance PVDF-based solid state Li metal batteries.

关键词： interfacial modification solid-state batteries composite polymer electrolytes interfacial compatibility lithium dendrite

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A Review on High Entropy Alloys as Metallic Biomaterials: Fabrication, Properties, Applications, Challenges, and Future Prospects

Biomedical Materials and Devices

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Biomedical materials and Devices 2025年 1-30页

作者： Adhikari, Jaideep Saha, Prerona Mandal, Pritam Sinha, Sudip Kumar Seikh, Asiful H. Mohammed, Jabair A. Ghosh, Manojit School of Advanced Materials Green Energy and Sensor Systems Indian Institute of Engineering Science and Technology Shibpur Howrah 711103 India Department of Metallurgy and Materials Engineering Indian Institute of Engineering Science and Technology Shibpur Howrah 711103 India Department of Metallurgical and Materials Engineering National Institute of Technology Raipur 492010 India Center of Excellence for Research in Engineering Materials (CEREM) Deanship of Scientific Research King Saud University Riyadh 11421 Saudi Arabia

In recent years, designing alloys with diverse elements or high entropy alloys (HEAs) has received significant research interest for biomedical applications, particularly bone repair techniques that use materials with excellent strength and biocompatibility. This review paper transitions from the core HEA concept to factors influencing cell-material interactions. The application area for Bio-HEA was not only fixed to orthopaedic implants;prospects in photothermal, bioimaging, biosensors, and therapeutics have also been discussed. Another focus of this review is identifying suitable elements that can elucidate reduced toxicity with enhanced antimicrobial activity. Critical discussions on lowering elastic modulus techniques for bio-HEAs have been provided that mitigate stress-shielding effect-related implant rejection. Further, corrosion and wear resistance and their impact on cellular functions have been discussed. Synthesis of HEA as a bulk material and the nuances of HEA as a nanoparticle have been discussed along with high entropy-based other systems for biomedical applications. The review further delves into HEA composite fabrication and its applicability as a coating material. Concepts like strength-ductility trade-off, the impact of elemental alloy composition on corrosion and other physical properties, strengthening mechanism, and single-phase stability concepts were discussed in connection to the Bio-HEA. The paper concludes by identifying the present challenges limiting the clinical translation of HEAs and exploring future in-depth research directions involving computational modelling and advanced manufacturing to optimize HEAs for biomedical use further. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2025.

关键词： Antimicrobial mechanism Bio-high entropy alloys Corrosion and wear resistance Implant host response

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Thermal and mechanical enhancements in polyimide/basalt fiber composites through mineral-based nano-dust particles

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Iranian Polymer Journal (English Edition) 2025年 1-12页

作者： Kumar, Arputham Arul Jeya Kumar, Ramasamy Senthil Madan, Madhur Gangishetti, Ankit Prakash, Muniyandi Department of Mechanical Engineering Center for Composites and Advanced Materials SRM Institute of Science and Technology Kattankulathur Tamil Nadu Chennai603203 India Department of Mechanical Engineering Mohamed Sathak Engineering College Tamil Nadu Keelakarai623806 India

The mineral-based nanoparticles derived from grinding of automobile brake pads are used in this study. The influence of nano-brake-pad dust particles in polyimide (PI) reinforced basalt fiber (BF) composites is experimentally investigated. Four different weight fractions of composites are prepared using hot compression molding. The fabricated PBN composites with dispersed nano-dust fillers find applications in automobile and aerospace engineering. The physical properties of the formulated composites are studied using Fourier transform infrared (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA) are carried out to identify the enhanced thermal behavior of the composites. The FTIR spectrum indicates the stretching of molecular structure for the occurrence of C=O links. SEM shows the strong interfacial bonding between the ingredients and matrix. DSC shows the glass transition temperature reduces with nanoparticles addition. TGA reveals that the composites withstand a temperature of 512.15 °C without degrading and the percentage of weight loss after degradation of the composite enhances to 28.64% more, when compared to the pure sample. DMA shows a significant increase of about 84.32% in storage modulus and subsequent decrease in the value of tan δ by around 42.9% when the weight percentage of nano-dust particles increases, compared with pure composites. The presence of multiple elements in the nano-dust particles may influence the physical and thermo-mechanical properties of the polymer composite when compared with single compound nanocomposites. © Iran Polymer and Petrochemical Institute 2025.

关键词： Compression molding

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Surface-modified Ag@Ru-P25 for photocatalytic CO_(2) conversion with high selectivity over CH_(4) formation at the solid–gas interface

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Carbon Energy 2024年第1期6卷 182-196页

作者： Chaitanya B.Hiragond Sohag Biswas Niket SPowar Junho Lee Eunhee Gong Hwapyong Kim Hong Soo Kim Jin-Woo Jung Chang-Hee Cho Bryan M.Wong Su-Il In Department of Energy Science&Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea Department of Chemical&Environmental Engineering Materials Science&Engineering ProgramDepartment of ChemistryDepartment of Physics&AstronomyUniversity of California-RiversideRiversideCaliforniaUSA Department of Physics and Chemistry Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea NiceScience Corporation DaeguRepublic of Korea

Systematic optimization of the photocatalyst and investigation of the role of each component is important to maximizing catalytic activity and comprehending the photocatalytic conversion of CO_(2) reduction to solar fuels.A surface-modified Ag@Ru-P25 photocatalyst with H_(2)O_(2) treatment was designed in this study to convert CO_(2) and H_(2)O vapor into highly selective *** doping followed by Ag nanoparticles(NPs)cocatalyst deposition on P25(TiO_(2))enhances visible light absorption and charge separation,whereas H_(2)O_(2) treatment modifies the surface of the photocatalyst with hydroxyl(–OH)groups and promotes CO_(2) ***-resonance transmission electron microscopy,X-ray photoelectron spectroscopy,X-ray absorption near-edge structure,and extended X-ray absorption fine structure techniques were used to analyze the surface and chemical composition of the photocatalyst,while thermogravimetric analysis,CO_(2) adsorption isotherm,and temperature programmed desorption study were performed to examine the significance of H_(2)O_(2) treatment in increasing CO_(2) reduction *** optimized Ag1.0@Ru1.0-P25 photocatalyst performed excellent CO_(2) reduction activity into CO,CH4,and C2H6 with a~95%selectivity of CH4,where the activity was~135 times higher than that of pristine TiO_(2)(P25).For the first time,this work explored the effect of H_(2)O_(2) treatment on the photocatalyst that dramatically increases CO_(2) reduction activity.

关键词： gas-phase CO_(2) reduction H_(2)O_(2) treatment plasmonic nanoparticles solar fuel photocatalyst surface modification

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Improved energy storage performance of Bi(Mg0.5Ti0.5)O3 modified Ba0.55Sr0.45TiO3 lead-free ceramics for pulsed power capacitors

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Journal of the European Ceramic Society 2023年第6期43卷 2426-2441页

作者： Rehman, Maqbool Ur Manan, Abdul Khan, Murad Ali Uzair, Muhammad Qazi, Ibrahim Iqbal, Yaseen Ullah, Atta Ahmad, Arbab Safeer Laboratory for Research in Advanced Materials Department of Physics University of Science & Technology Bannu Township Bannu Khyber Pakhtunkhwa28100 Pakistan Materials Research Laboratory Department of Physics University of Peshawar Khyber Pakhtunkhwa25120 Pakistan Department of Materials Science and Engineering Institute of Space Technology Islamabad44000 Pakistan Center for Materials Science Islamia College Peshawar Khyber Pakhtunkhwa25120 Pakistan

(1–x)Ba0.55Sr0.45TiO3–xBi(Mg0.5Ti0.5)O3 (x = 0, 0.08, 0.1, 0.12, 0.15, 0.2) ceramics were fabricated via a solid-state reaction route. The ultrahigh recoverable energy density (Wrec = 4.05 J cm−3), efficiency (η = 78%), maximum polarization (Pmax = 51.40 μC cm−2), and high dielectric breakdown strength (BDS = 230 kV cm−1) were achieved for the 0.9BST−0.1BMT ceramic. The fast discharge rate (t0.9∼0.14 μs), current density (CD∼637.02 A cm−2), high power density (PD∼38.70 MW cm−3), good temperature stability (20−180 °C), frequency stability (10−500 Hz), and fatigue endurance for cycling (105) of 0.9BST−0.1BMT ceramic make it suitable for the development of energy-storage devices. The relaxor behavior with a high Wrec (3.06 J cm−3) and η (93%) at BDS (220 kV cm−1) was also achieved for the 0.8BST−0.2BMT ceramic. This study systematically investigates the correlation among the structural, dielectric, impedance, and energy storage properties of BMT-doped BST ceramics. © 2023 Elsevier Ltd

关键词： Energy storage

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Realization of solid-state red fluorescence and concentration-induced multicolor emission from N,B co-doped carbon dots

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Frontiers of materials science 2023年第2期17卷 121-132页

作者： Junli Wang Jingxia Zheng Pinyi He Qiang Li Yongzhen Yang Xuguang Liu Juanzhi Yan Yi Zhang Department of Materials and Chemical Engineering Taiyuan UniversityTaiyuan 030032China Key Laboratory of Interface Science and Engineering in Advanced Materials(Ministry of Education) Taiyuan University of TechnologyTaiyuan 030024China School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Department of Chemistry and Chemical Engineering Lyuliang UniversityLyuliang 033001China

As a new type of luminescent material,carbon dots(CDs)have attracted increased attention for their superior optical properties in recent ***,solidstate fluorescent CDs,especially with red emission,are still a major ***,CDs with solid-state red emission were synthesized by co-doping of N and B using the one-step microwave *** CD powder exhibits excitation-independent solid-state red fluorescence without any dispersion matrices,with optimum solid-state fluorescence wavelength of 623 *** hydrogen bonding interaction in CDs is helpful for solid-state fluorescence of *** IG/ID value of CDs reaches up to 3.49,suggesting their very high graphitization degree,which is responsible for their red *** addition,CDs show the concentration-induced multicolor emission,which is attributed to the decreased energy gap in the high concentrated CD *** exploit their concentration-dependent emission,CDs with changing ratio in matrices are applied as a color-converting layer on ultraviolet chip to fabricate multicolor light-emitting diodes with light coordinates of(0.33,0.38),(0.41,0.48),(0.49,0.44),and(0.67,0.33),which belong to green,yellow,orange,and red light,respectively.

关键词： carbon dot solid-state red fluorescence concentration-induced multicolor emission N,B co-doping

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A dynamically stable self-healable wire based on mechanical-electrical coupling

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国家科学评论（英文版） 2024年第3期11卷 244-252页

作者： Shuo Wang Zhaofeng Ouyang Shitao Geng Yan Wang Xiaoju Zhao Bin Yuan Xiao Zhang Qiuchen Xu Chengqiang Tang Shanshan Tang Han Miao Huisheng Peng Hao Sun Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringZhangjiang Institute for Advanced Studyand Key Laboratory of Green and High-End Utilization of Salt Lake Resources(Chinese Academy of Sciences)Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceInstitute of Fiber Materials and Devicesand Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China School of Materials Science and Engineering East China University of Science and TechnologyShanghai 200433China

The rise in wearable electronics has witnessed the advancement of self-healable wires,which are capable of recovering mechanical and electrical properties upon structural ***,their highly fluctuating electrical resistances in the range of hundreds to thousands of ohms under dynamic conditions such as bending,pressing,stretching and tremoring may seriously degrade the precision and continuity of the resulting electronic devices,thus severely hindering their wearable ***,we report a new family of self-healable wires with high strengths and stable electrical conductivities under dynamic conditions,inspired by mechanical-electrical coupling of the myelinated axon in *** self-healable wire based on mechanical-electrical coupling between the structural and conductive components has significantly improved the electrical stability under dynamic scenarios,enabling precise monitoring of human health status and daily activities,even in the case of limb tremors from simulated Parkinson's *** mechanical-electrical coupling strategy opens a new avenue for the development of dynamically stable electrodes and devices toward real-world wearable applications.

关键词： self-healable wire interfacial chemistry polymer materials mechanical–electrical coupling fiber device

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Thermal stability and deformation mechanisms in Ni-Co-Fe-Cr-Al-Ti-Nb-type nanoparticle-strengthened high-entropy alloys

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Journal of materials science & technology 2023年第36期167卷 171-183页

作者： J.X.Hou J.Y.Zhang J.X.Zhang J.H.Luan Y.X.Wang B.X.Cao Y.L.Zhao Z.B.Jiao X.J.Liu W.W.Song P.K.Liaw T.Yang Department of Materials Science and Engineering Hong Kong Institute for Advanced StudyCity University of Hong KongHong KongChina School of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHong KongChina Steel Institute RWTH Aachen UniversityAachen 52072Germany Institute of Materials Engineering University of KasselKassel 334125Germany Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN 37996-2200USA City University of Hong Kong China

The precipitate morphologies,coarsening kinetics,elemental partitioning behaviors,grain structures,and tensile properties were explored in detail for L1_(2)-strengthened Ni_(39.9)Co_(20)Fe_(15)Cr_(15)Al_(6)Ti_(4-x)Nb_(x)B_(0.1)(x=0 at.%,2 at.%,and 4 at.%)high-entropy alloys(HEAs).By substituting Ti with Nb,the spheroidal-to-cuboidal precipitate morphological transition,increase in the coarsening kinetics,and phase decomposition upon aging at 800°C *** excessive addition of Nb brings about the grain boundary precipitation of an Nb-rich phase along with the phase decomposition from the L1_(2)to lamellar-structured D019 phase upon the long-term aging *** partially substituting Ti with Nb,the chemically complex and thermally stable L12 phase with a composition of(Ni_(58.8)Co_(9.8)Fe_(2.7))(Al_(12.7)Ti_(5.8)Nb_(7.5)Cr_(2.3))ensures the stable phase structure and clean grain boundaries,which guarantees the superb high-temperature mechanical properties(791±7 MPa for yielding and 1013±11 MPa for failure)at 700℃.Stacking faults(SFs)were observed to prevail during the plastic deformation,offering a high work-hardening capability at 700°*** anomalous rise in the yield strength at 800℃was found,which could be ascribed to the multi-layered super-partial dislocations with a cross-slip configuration within the L1_(2)particles.

关键词： High-entropy alloys Coarsening kinetics Coherent precipitation strengthening Mechanical properties

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Phase-transition-free rivets for layered oxide potassium cathodes

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Nano Research 2024年第11期17卷 9671-9678页

作者： Jie Chen Apparao M. Rao Caitian Gao Jiang Zhou Limei Cha Xiaoming Yuan Bingan Lu School of Physics and Electronics Hunan University Changsha 410082 China Department of Physics and Astronomy Clemson Nanomaterials Institute Clemson University Clemson SC USA School of Materials Science and Engineering Central South University Changsha 410083 China Materials Science and Engineering program Guangdong Technion-Israel Institute of Technology Shantou 515063 China Materials Science and Engineering program Technion-Israel Institute of Technology Haifa 32000 Israel MATEC Key Lab Guangdong Technion-Israel Institute of Technology Shantou 515063 China Hunan Key Laboratory of Nanophotonics and Devices School of Physics Central South University Changsha 410078 China

As a cathode material for potassium-ion batteries (PIBs), manganese-based layered oxides have attracted widespread attention due to their low cost, ease of synthesis, and high performance. However, the Jahn-Teller effect caused by Mn3+ and the irreversible phase transformation of the structure leads to poor cycle stability, limiting the development of layered oxides in PIBs. Herein, we demonstrate the use of phase-transition-free CaTiO_(3) as rivets in K_(0.5)Mn_(0.9)Ti_(0.1)O_(2) by a simple solid-state method. As verified by the in situ X-ray diffraction, the CaTiO_(3) rivets effectively prevent the slippage of the transition metal layer during charge and discharge, inhibiting structural degradation. As a result, the obtained K_(0.5)Mn_(0.9)Ti_(0.1)O_(2)-0.02CaTiO_(3) shows excellent cycling stability and rate performance, with high capacities of 119.3 and 70.1 mAh·g^(-1) at 20 and 1000 mA·g^(-1), respectively. At 200 mA·g^(-1), the capacity retention remains 94.7% after more than 300 cycles. This work represents a new avenue for designing and optimizing layered cathode materials for PIBs and other batteries.

关键词： potassium cathodes layered oxide phase-transition-free perovskite rivets

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Bright dual-color electrochemiluminescence of a structurally determined Pt1Ag18 nanocluster

Aggregate

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Aggregate 2024年第1期5卷 345-352页

作者： Bing Yin Lirong Jiang Xiaojian Wang Ying Liu Kaiyang Kuang Mengmeng Jing Chunmin Fang Chuanjun Zhou Shuang Chen Manzhou Zhu Institutes of Physical Science and Information Technology and Centre for Atomic Engineering of Advanced Materials Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationDepartment of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui UniversityHefeiChina

Metal nanoclusters possess excellent electrochemical,optical,and catalytic properties,but correlating these properties remains challenging,which is the foundation to generate electrochemiluminescence(ECL).Herein,we report for the first time that a structurally determined Pt1Ag18 nanocluster generates intense ECL and simultaneously enhances the ECL of carbon dots(CDs)via an electrocatalytic ***^(1)Ag_(18)nanocluster show aggregation-induced emission enhancement and aggregation-induced ECL enhancement under light and electrochemical stimulation,*** the presence of tripropylamine(TPrA)as a coreactant,solid Pt1Ag18 shows unprecedented ECL efficiency,which is more than nine times higher than that of 1 mM Ru(bpy)32+with the same TPrA ***-resolved ECL spectra reveal two ECL emission bands in the presence of *** ECL emission centered at 650 nm is assigned to the solid Pt_(1)Ag_(18)nanocluster,consistent with the peak wavelength in self-annihilation ECL and photoluminescence of the solid *** ECL emission centered at 820 nm is assigned to the CDs on the glassy carbon *** electrocatalytic effect of the nanoclusters enhanced the ECL of the CDs by a factor of more than 180 in comparison to that without *** on the combined optical and electrochemical results,the ECL generation pathways and mechanisms of Pt1Ag18 and CDs are *** findings are extremely promising for designing multifunctional nanocluster luminophores with strong emissions and developing ratiometric sensing devices.

关键词： AIECLE AIEE electrochemiluminescence nanocluster photoluminescence structure

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